An employee joined a PSU in 2002, initially ahead of a junior colleague. Both were promoted in July 2016 after the 7th Central Pay Commission (CPC) implementation. The employee opted for the 7th CPC from January 2016, while the junior opted from July 2016. This difference resulted in the junior being placed at a higher pay scale. The employee's request to 'step up' their pay to match the junior's was denied by HR, who cited the different opting dates as the reason for no anomaly. The employee is seeking advice on whether the HR decision is correct or if they should pursue the matter further.